準備：os是centos6.7,提前下載並上傳 percona-xtrabackup 安裝包，下載網址為：
1.安裝依賴包
[root@localhost xtrabackup]# yum -y install perl perl-devel libaio libaio-devel perl-Time-HiRes perl-DBD-MySQL
Dependency Installed:
perl-DBI.x86_64 0:1.609-4.el6
Complete!
2. 安裝 percona-xtrabackup 工具
2.1 -- 發現缺包
[root@mysql01 ~]# rpm -ivh percona-xtrabackup-24-2.4.7-1.el5.x86_64.rpm
warning: percona-xtrabackup-24-2.4.7-1.el5.x86_64.rpm: Header V4 DSA/SHA1 Signature, key ID cd2efd2a: NOKEY
error: Failed dependencies:
libcurl.so.3()(64bit) is needed by percona-xtrabackup-24-2.4.7-1.el5.x86_64
libev.so.4()(64bit) is needed by percona-xtrabackup-24-2.4.7-1.el5.x86_64
2.2 -- 配置本地yum源後，用 yum 發現依然找不到包，搜尋後，網友解決方法是單獨下載 libev-4.15-1.el6.rf.x86_64.rpm 包
2.3 -- 安裝 libev-4.15-1.el6.rf.x86_64.rpm 包，過了。
[root@mysql01 ~]# rpm -ivh libev-4.15-1.el6.rf.x86_64.rpm
[root@mysql01 ~]# rpm -ivh percona-xtrabackup-24-2.4.7-1.el5.x86_64.rpm
warning: percona-xtrabackup-24-2.4.7-1.el5.x86_64.rpm: Header V4 DSA/SHA1 Signature, key ID cd2efd2a: NOKEY
error: Failed dependencies:
libcurl.so.3()(64bit) is needed by percona-xtrabackup-24-2.4.7-1.el5.x86_64
2.4 -- libcurl.so.3()(64bit) is needed by percona-xtrabackup-24-2.4.7-1.el5.x86_64 ，依然解決不了，最後決定強行安裝。（這個問題卡了兩個小時，現在不能很好的解決，留到以後再看）
[root@mysql01 ~]# rpm -ivh percona-xtrabackup-24-2.4.7-1.el5.x86_64.rpm --nodeps --force
warning: percona-xtrabackup-24-2.4.7-1.el5.x86_64.rpm: Header V4 DSA/SHA1 Signature, key ID cd2efd2a: NOKEY
Preparing... ########################################### [100%]
1:percona-xtrabackup-24 ########################################### [100%]
3. 測試，檢視 percona-xtrabackup 版本
[root@mysql01 ~]# innobackupex -v
innobackupex version 2.4.7 Linux (x86_64) (revision id: 6f7a799)
[root@mysql01 ~]# rpm -ql percona-xtrabackup-24
/usr/bin/innobackupex
/usr/bin/xbcloud
/usr/bin/xbcloud_osenv
/usr/bin/xbcrypt
/usr/bin/xbstream
/usr/bin/xtrabackup
說明：Xtrabackup有兩個主要的工具：xtrabackup、innobackupex
a、xtrabackup只能備份InnoDB和XtraDB兩種資料表，而不能備份MyISAM資料表
b、innobackupex是一個perl指令碼封裝了xtrabackup。支援同時備份InnoDB和MyISAM引擎的表。
4. 測試全備資料庫
[root@mysql01 ~]# innobackupex --user=root --password=oracle --port=3606 --socket=/var/lib/mysql/mysql.sock /xtrabackup/full/
170602 06:48:07 innobackupex: Starting the backup operation
IMPORTANT: Please check that the backup run completes successfully.
At the end of a successful backup run innobackupex
prints "completed OK!".
170602 06:48:07 version_check Connecting to MySQL server with DSN 'dbi:mysql:;mysql_read_default_group=xtrabackup;port=3606;mysql_socket=/var/lib/mysql/mysql.sock' as 'root' (using password: YES).
Failed to connect to MySQL server as DBD::mysql module is not installed at - line 1327.
170602 06:48:07 Connecting to MySQL server host: localhost, user: root, password: set, port: 3606, socket: /var/lib/mysql/mysql.sock
Using server version 5.6.25
innobackupex version 2.4.7 based on MySQL server 5.7.13 Linux (x86_64) (revision id: 6f7a799)
xtrabackup: uses posix_fadvise().
xtrabackup: cd to /var/lib/mysql/
xtrabackup: open files limit requested 0, set to 1024
xtrabackup: using the following InnoDB configuration:
xtrabackup: innodb_data_home_dir = .
xtrabackup: innodb_data_file_path = ibdata1:12M:autoextend
xtrabackup: innodb_log_group_home_dir = ./
xtrabackup: innodb_log_files_in_group = 2
xtrabackup: innodb_log_file_size = 50331648
InnoDB: Number of pools: 1
。。。。
170602 06:48:10 Executing UNLOCK TABLES
170602 06:48:10 All tables unlocked
170602 06:48:10 Backup created in directory '/xtrabackup/full/2017-06-02_06-48-07/'
170602 06:48:10 [00] Writing backup-my.cnf
170602 06:48:10 [00] ...done
170602 06:48:10 [00] Writing xtrabackup_info
170602 06:48:10 [00] ...done
xtrabackup: Transaction log of lsn (1626027) to (1626027) was copied.
170602 06:48:10 completed OK!
5. 檢查備份
[root@mysql01 ~]# ll /xtrabackup/full/
total 4
drwxr-x---. 5 root root 4096 Jun 2 06:53 2017-06-02_06-53-37
說明：工具使用沒有問題，成功！

mysql之 percona-xtrabackup 2.4.7安裝（熱備工具）

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